Improvement



A.\11uNa'E.

NO MQJB.

ALBERT JUNGE, OF ALLEGHENY, PENNSYLVANIAA I IMPROVEMENT'IN SPRiNG-MATTRESSES.

Specification forming part of' Letters Patent No. 149,?58,

January 30, 1374.

dated April 11i, 1874; application `filed To all whom it may concern:

Beit known that I, ALnnn'r J UNGE, ofthe city and county of Allegheny, in the State of Pennsylvania, have invented au Improved Spring-Mattress, of which the following is a specification:

This invention relates to those folding mattresses in which a sufficient number of spiral springs are supported on light marginal basei' frames in the respective sections, and on fibrous strips attached thereto, and a padded top continuous from end to end is supported by the springs, the whole being inclosed in ticking'.

The presentinvention consists in a cushion attached to the under side of the padded top,

to separate the inner springs from thosewhich rest on the marginal frames, the object being to prevent chatng and to secure permanently elastic edges; also, in a hinge-joint formed by connecting the uppercoils of the adjoining springs, all as hereinafter set forth. The frame commonly interposed between the springs and the padded top, andthe wooden sides and metallic hinges, are thus entirely dispensed with, while their advantages are retained in 'a superior manner.

Figure l is a vertical longitudinal section of this improved spring-mattress on the line l l, Fig. 2. Fig. 2 is an under-side view of the same with the ticking removed from the bottom of one part, and the other part in horizontal section on the line 2 2, Fig. l.

The lower portion of this mattress is composed of two or ,more transverse sections, A A2. Its top B is a continuous thin cushion stuffed with hair or other approved material. l 11 each lower section of the mattress a light marginal frame, c, of wood, constitutes the base. Within these frames ibrous strips b are stretched, and on the base-frames c and strips b vertical spiral springs c c2 in sufficient number are mounted. rlhese latter may be of any approved form. The bottoms and sides of the spring-sections are closed by ticking d. T o separate the springs so as to prevent them from chafing, and to prevent the bending inward of the upper corners, and to aid in securing permanently elastic edges, an internal cushion, c, is formed on the under side of the padded top B, between the inner springs cof each section and the outer springs c, or those displacement of the springs, each spring is se-4 curely sewed in position by cords j', or held by loops and tacks j, the latter being applied to the lower coils of those springs which rest on the frames. The springs are also stayed laterally and vertically by cords g h, in customary manner. The hinges between the spring-4 sections are formed by uniting the adjoining springs c by means of loops or stitches z' of cord. Liftingloops k may be attached, as represented. Details of construction not herein specified may be of common character.

One chief advantage which is claimed for this improved mattress is, that it is equally and permanently elastic at every point, at the corners and over the hinges not less than in other parts. It is also very strong and durable, and adapted to be cheaply manufactured, and is perfectly noiseless.

The primary advantage of permanently elastic and prominent upper corners or edges is secured in part by arranging the springs as described, and fastening each spring in place, but chiefly by the provision of the cushions c, which serve also to prevent chating between the outer springs and those next to them within the frames.

These Acushions operate as follows: The springs within the frame naturally retain their vertical positions parallel to each other, and may be readily braced by the stay-cords; but the outer springs cannot be thus braced effectuall y against inward deflection; consequently, in mattresses ofthe general form to which this invention relates, although cheaper than those with wooden' sides, and superior in other respects, have been objectionable, because the outer springs, yielding to repeated bending', finally assume the form into which they are pressed, and the edges become rounded, loose, and unduly soft. The inner springs being braced, it will be clear that the supporting-cushions between the outer row of these and those on the marginal frame serve not only to prevent chafing between the springs, but also which otherwise occurs at this point,

1. In a spring-mattress having marginal base-frames, and a padded top which rests directly on the springs, the cushions e, attached prominence and to the padded top between the inner springs o2 and the outer springs c, in order to prevent chang, and to preserve permanently elastic and prominent upper corners or edges, substantially as herein set forth.

2. In a mattress composed of spring-sections A A2 and a continuons padded top, B, the connbination of dat marginal base-frames a and springs c thereon, adjoining and united by loops or stitches f5, to constitute hinges between the sections, substantially as herein shown and described.

ALBERT JUNGE.

Witnesses HENRY STACKMANN, JOHN H. STRAUB. 

